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- Edwin Hubble
- Agnes M. Clerke
- Agnes M. Clerke
- Hector Macpherson
- Svante Arrhenius
- William Stirling
- E. Walter Maunder
- Albert Daiber
- C. V. L. Charlier
- E. Walter Maunder
- Robert S. Ball
- David P. Todd
- George C. Comstock
- Edward C. Pickering
- Meyer Moldeven
- Simon Newcomb
- George Ellery Hale
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Other Worlds Their Nature, Possibilities and Habitability in the Light of the Latest Discoveries
Garrett Putman ServissRead For Free - Garrett Putman Serviss












